Navigation system and storage medium
US6694255B1 · kind B1 · utility
12Cited by
8References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 23, 2000 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | May 23, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3647
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Branch-point image data has coordinates added thereto according to the distance from a branch point such as an intersection. When the vehicle is within a predetermined distance from a branch point on a suggested route, the coordinates of the present position of the vehicle and the coordinates added to the branch-point image data are compared to locate the present position on the image data, and a present-position mark is displayed superimposed on the branch-point image data. The displayed present-position mark moves according to the distance between the vehicle and the branch point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.